Sofa



FIG. 1 is a top, front and left side perspective view of a sofa;

FIG. 2 is a top, rear and right side perspective view of a sofa;

FIG. 3 is a right side elevational view of a sofa;

FIG. 4 is a left side elevational view of a sofa;

FIG. 5 is a rear elevational view of a sofa;

FIG. 6 is a front elevational view of a sofa;

FIG. 7 is a bottom plan view of a sofa; and,

FIG. 8 is a top plan view of a sofa. 

The ornamental design for a “sofa,” as shown and described. 